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630 lines
21 KiB
630 lines
21 KiB
<?php |
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/** |
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* @link http://www.yiiframework.com/ |
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* @copyright Copyright (c) 2008 Yii Software LLC |
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* @license http://www.yiiframework.com/license/ |
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*/ |
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namespace yii\validators; |
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use Yii; |
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use yii\base\InvalidConfigException; |
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use yii\helpers\Html; |
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use yii\helpers\Json; |
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use yii\web\JsExpression; |
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/** |
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* The validator checks if the attribute value is a valid IPv4/IPv6 address or subnet. |
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* |
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* It also may change attribute's value if normalization of IPv6 expansion is enabled. |
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* |
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* The following are examples of validation rules using this validator: |
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* |
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* ```php |
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* ['ip_address', 'ip'], // IPv4 or IPv6 address |
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* ['ip_address', 'ip', 'ipv6' => false], // IPv4 address (IPv6 is disabled) |
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* ['ip_address', 'ip', 'subnet' => true], // requires a CIDR prefix (like 10.0.0.1/24) for the IP address |
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* ['ip_address', 'ip', 'subnet' => null], // CIDR prefix is optional |
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* ['ip_address', 'ip', 'subnet' => null, 'normalize' => true], // CIDR prefix is optional and will be added when missing |
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* ['ip_address', 'ip', 'ranges' => ['192.168.0.0/24']], // only IP addresses from the specified subnet are allowed |
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* ['ip_address', 'ip', 'ranges' => ['!192.168.0.0/24', 'any']], // any IP is allowed except IP in the specified subnet |
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* ['ip_address', 'ip', 'expandIPv6' => true], // expands IPv6 address to a full notation format |
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* ``` |
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* |
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* @property array $ranges The IPv4 or IPv6 ranges that are allowed or forbidden. See [[setRanges()]] for |
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* detailed description. |
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* |
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* @author Dmitry Naumenko <d.naumenko.a@gmail.com> |
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* @since 2.0.7 |
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*/ |
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class IpValidator extends Validator |
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{ |
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/** |
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* The length of IPv6 address in bits |
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*/ |
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const IPV6_ADDRESS_LENGTH = 128; |
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/** |
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* The length of IPv4 address in bits |
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*/ |
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const IPV4_ADDRESS_LENGTH = 32; |
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/** |
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* Negation char. Used to negate [[ranges]] or [[networks]] |
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* or to negate validating value when [[negation]] is set to `true` |
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* @see negation |
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* @see networks |
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* @see ranges |
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*/ |
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const NEGATION_CHAR = '!'; |
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/** |
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* @var array The network aliases, that can be used in [[ranges]]. |
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* - key - alias name |
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* - value - array of strings. String can be an IP range, IP address or another alias. String can be |
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* negated with [[NEGATION_CHAR]] (independent of `negation` option). |
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* |
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* The following aliases are defined by default: |
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* - `*`: `any` |
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* - `any`: `0.0.0.0/0, ::/0` |
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* - `private`: `10.0.0.0/8, 172.16.0.0/12, 192.168.0.0/16, fd00::/8` |
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* - `multicast`: `224.0.0.0/4, ff00::/8` |
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* - `linklocal`: `169.254.0.0/16, fe80::/10` |
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* - `localhost`: `127.0.0.0/8', ::1` |
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* - `documentation`: `192.0.2.0/24, 198.51.100.0/24, 203.0.113.0/24, 2001:db8::/32` |
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* - `system`: `multicast, linklocal, localhost, documentation` |
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* |
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*/ |
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public $networks = [ |
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'*' => ['any'], |
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'any' => ['0.0.0.0/0', '::/0'], |
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'private' => ['10.0.0.0/8', '172.16.0.0/12', '192.168.0.0/16', 'fd00::/8'], |
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'multicast' => ['224.0.0.0/4', 'ff00::/8'], |
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'linklocal' => ['169.254.0.0/16', 'fe80::/10'], |
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'localhost' => ['127.0.0.0/8', '::1'], |
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'documentation' => ['192.0.2.0/24', '198.51.100.0/24', '203.0.113.0/24', '2001:db8::/32'], |
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'system' => ['multicast', 'linklocal', 'localhost', 'documentation'], |
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]; |
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/** |
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* @var bool whether the validating value can be an IPv6 address. Defaults to `true`. |
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*/ |
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public $ipv6 = true; |
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/** |
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* @var bool whether the validating value can be an IPv4 address. Defaults to `true`. |
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*/ |
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public $ipv4 = true; |
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/** |
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* @var bool whether the address can be an IP with CIDR subnet, like `192.168.10.0/24`. |
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* The following values are possible: |
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* |
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* - `false` - the address must not have a subnet (default). |
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* - `true` - specifying a subnet is required. |
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* - `null` - specifying a subnet is optional. |
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*/ |
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public $subnet = false; |
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/** |
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* @var bool whether to add the CIDR prefix with the smallest length (32 for IPv4 and 128 for IPv6) to an |
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* address without it. Works only when `subnet` is not `false`. For example: |
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* - `10.0.1.5` will normalized to `10.0.1.5/32` |
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* - `2008:db0::1` will be normalized to `2008:db0::1/128` |
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* Defaults to `false`. |
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* @see subnet |
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*/ |
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public $normalize = false; |
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/** |
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* @var bool whether address may have a [[NEGATION_CHAR]] character at the beginning. |
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* Defaults to `false`. |
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*/ |
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public $negation = false; |
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/** |
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* @var bool whether to expand an IPv6 address to the full notation format. |
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* Defaults to `false`. |
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*/ |
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public $expandIPv6 = false; |
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/** |
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* @var string Regexp-pattern to validate IPv4 address |
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*/ |
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public $ipv4Pattern = '/^(?:(?:2(?:[0-4][0-9]|5[0-5])|[0-1]?[0-9]?[0-9])\.){3}(?:(?:2([0-4][0-9]|5[0-5])|[0-1]?[0-9]?[0-9]))$/'; |
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/** |
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* @var string Regexp-pattern to validate IPv6 address |
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*/ |
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public $ipv6Pattern = '/^(([0-9a-fA-F]{1,4}:){7,7}[0-9a-fA-F]{1,4}|([0-9a-fA-F]{1,4}:){1,7}:|([0-9a-fA-F]{1,4}:){1,6}:[0-9a-fA-F]{1,4}|([0-9a-fA-F]{1,4}:){1,5}(:[0-9a-fA-F]{1,4}){1,2}|([0-9a-fA-F]{1,4}:){1,4}(:[0-9a-fA-F]{1,4}){1,3}|([0-9a-fA-F]{1,4}:){1,3}(:[0-9a-fA-F]{1,4}){1,4}|([0-9a-fA-F]{1,4}:){1,2}(:[0-9a-fA-F]{1,4}){1,5}|[0-9a-fA-F]{1,4}:((:[0-9a-fA-F]{1,4}){1,6})|:((:[0-9a-fA-F]{1,4}){1,7}|:)|fe80:(:[0-9a-fA-F]{0,4}){0,4}%[0-9a-zA-Z]{1,}|::(ffff(:0{1,4}){0,1}:){0,1}((25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9])\.){3,3}(25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9])|([0-9a-fA-F]{1,4}:){1,4}:((25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9])\.){3,3}(25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9]))$/'; |
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/** |
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* @var string user-defined error message is used when validation fails due to the wrong IP address format. |
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* |
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* You may use the following placeholders in the message: |
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* |
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* - `{attribute}`: the label of the attribute being validated |
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* - `{value}`: the value of the attribute being validated |
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*/ |
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public $message; |
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/** |
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* @var string user-defined error message is used when validation fails due to the disabled IPv6 validation. |
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* |
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* You may use the following placeholders in the message: |
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* |
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* - `{attribute}`: the label of the attribute being validated |
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* - `{value}`: the value of the attribute being validated |
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* |
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* @see ipv6 |
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*/ |
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public $ipv6NotAllowed; |
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/** |
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* @var string user-defined error message is used when validation fails due to the disabled IPv4 validation. |
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* |
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* You may use the following placeholders in the message: |
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* |
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* - `{attribute}`: the label of the attribute being validated |
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* - `{value}`: the value of the attribute being validated |
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* |
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* @see ipv4 |
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*/ |
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public $ipv4NotAllowed; |
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/** |
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* @var string user-defined error message is used when validation fails due to the wrong CIDR. |
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* |
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* You may use the following placeholders in the message: |
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* |
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* - `{attribute}`: the label of the attribute being validated |
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* - `{value}`: the value of the attribute being validated |
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* @see subnet |
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*/ |
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public $wrongCidr; |
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/** |
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* @var string user-defined error message is used when validation fails due to subnet [[subnet]] set to 'only', |
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* but the CIDR prefix is not set. |
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* |
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* You may use the following placeholders in the message: |
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* |
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* - `{attribute}`: the label of the attribute being validated |
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* - `{value}`: the value of the attribute being validated |
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* |
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* @see subnet |
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*/ |
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public $noSubnet; |
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/** |
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* @var string user-defined error message is used when validation fails |
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* due to [[subnet]] is false, but CIDR prefix is present. |
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* |
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* You may use the following placeholders in the message: |
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* |
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* - `{attribute}`: the label of the attribute being validated |
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* - `{value}`: the value of the attribute being validated |
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* |
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* @see subnet |
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*/ |
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public $hasSubnet; |
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/** |
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* @var string user-defined error message is used when validation fails due to IP address |
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* is not not allowed by [[ranges]] check. |
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* |
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* You may use the following placeholders in the message: |
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* |
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* - `{attribute}`: the label of the attribute being validated |
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* - `{value}`: the value of the attribute being validated |
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* |
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* @see ranges |
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*/ |
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public $notInRange; |
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/** |
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* @var array |
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*/ |
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private $_ranges = []; |
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/** |
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* @inheritdoc |
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*/ |
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public function init() |
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{ |
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parent::init(); |
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if (!$this->ipv4 && !$this->ipv6) { |
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throw new InvalidConfigException('Both IPv4 and IPv6 checks can not be disabled at the same time'); |
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} |
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if (!defined('AF_INET6') && $this->ipv6) { |
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throw new InvalidConfigException('IPv6 validation can not be used. PHP is compiled without IPv6'); |
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} |
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if ($this->message === null) { |
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$this->message = Yii::t('yii', '{attribute} must be a valid IP address.'); |
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} |
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if ($this->ipv6NotAllowed === null) { |
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$this->ipv6NotAllowed = Yii::t('yii', '{attribute} must not be an IPv6 address.'); |
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} |
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if ($this->ipv4NotAllowed === null) { |
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$this->ipv4NotAllowed = Yii::t('yii', '{attribute} must not be an IPv4 address.'); |
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} |
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if ($this->wrongCidr === null) { |
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$this->wrongCidr = Yii::t('yii', '{attribute} contains wrong subnet mask.'); |
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} |
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if ($this->noSubnet === null) { |
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$this->noSubnet = Yii::t('yii', '{attribute} must be an IP address with specified subnet.'); |
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} |
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if ($this->hasSubnet === null) { |
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$this->hasSubnet = Yii::t('yii', '{attribute} must not be a subnet.'); |
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} |
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if ($this->notInRange === null) { |
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$this->notInRange = Yii::t('yii', '{attribute} is not in the allowed range.'); |
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} |
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} |
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/** |
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* Set the IPv4 or IPv6 ranges that are allowed or forbidden. |
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* |
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* The following preparation tasks are performed: |
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* |
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* - Recursively substitutes aliases (described in [[networks]]) with their values. |
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* - Removes duplicates |
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* |
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* @property array the IPv4 or IPv6 ranges that are allowed or forbidden. |
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* See [[setRanges()]] for detailed description. |
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* @param array $ranges the IPv4 or IPv6 ranges that are allowed or forbidden. |
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* |
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* When the array is empty, or the option not set, all IP addresses are allowed. |
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* |
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* Otherwise, the rules are checked sequentially until the first match is found. |
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* An IP address is forbidden, when it has not matched any of the rules. |
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* |
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* Example: |
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* |
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* ```php |
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* [ |
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* 'ranges' => [ |
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* '192.168.10.128' |
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* '!192.168.10.0/24', |
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* 'any' // allows any other IP addresses |
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* ] |
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* ] |
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* ``` |
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* |
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* In this example, access is allowed for all the IPv4 and IPv6 addresses excluding the `192.168.10.0/24` subnet. |
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* IPv4 address `192.168.10.128` is also allowed, because it is listed before the restriction. |
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*/ |
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public function setRanges($ranges) |
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{ |
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$this->_ranges = $this->prepareRanges((array) $ranges); |
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} |
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/** |
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* @return array The IPv4 or IPv6 ranges that are allowed or forbidden. |
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*/ |
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public function getRanges() |
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{ |
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return $this->_ranges; |
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} |
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/** |
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* @inheritdoc |
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*/ |
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protected function validateValue($value) |
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{ |
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$result = $this->validateSubnet($value); |
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if (is_array($result)) { |
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$result[1] = array_merge(['ip' => is_array($value) ? 'array()' : $value], $result[1]); |
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return $result; |
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} else { |
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return null; |
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} |
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} |
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/** |
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* @inheritdoc |
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*/ |
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public function validateAttribute($model, $attribute) |
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{ |
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$value = $model->$attribute; |
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$result = $this->validateSubnet($value); |
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if (is_array($result)) { |
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$result[1] = array_merge(['ip' => is_array($value) ? 'array()' : $value], $result[1]); |
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$this->addError($model, $attribute, $result[0], $result[1]); |
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} else { |
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$model->$attribute = $result; |
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} |
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} |
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/** |
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* Validates an IPv4/IPv6 address or subnet |
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* |
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* @param $ip string |
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* @return string|array |
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* string - the validation was successful; |
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* array - an error occurred during the validation. |
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* Array[0] contains the text of an error, array[1] contains values for the placeholders in the error message |
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*/ |
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private function validateSubnet($ip) |
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{ |
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if (!is_string($ip)) { |
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return [$this->message, []]; |
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} |
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$negation = null; |
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$cidr = null; |
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$isCidrDefault = false; |
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if (preg_match($this->getIpParsePattern(), $ip, $matches)) { |
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$negation = ($matches[1] !== '') ? $matches[1] : null; |
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$ip = $matches[2]; |
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$cidr = isset($matches[4]) ? $matches[4] : null; |
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} |
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if ($this->subnet === true && $cidr === null) { |
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return [$this->noSubnet, []]; |
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} |
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if ($this->subnet === false && $cidr !== null) { |
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return [$this->hasSubnet, []]; |
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} |
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if ($this->negation === false && $negation !== null) { |
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return [$this->message, []]; |
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} |
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if ($this->getIpVersion($ip) == 6) { |
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if ($cidr !== null) { |
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if ($cidr > static::IPV6_ADDRESS_LENGTH || $cidr < 0) { |
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return [$this->wrongCidr, []]; |
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} |
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} else { |
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$isCidrDefault = true; |
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$cidr = static::IPV6_ADDRESS_LENGTH; |
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} |
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if (!$this->validateIPv6($ip)) { |
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return [$this->message, []]; |
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} |
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if (!$this->ipv6) { |
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return [$this->ipv6NotAllowed, []]; |
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} |
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if ($this->expandIPv6) { |
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$ip = $this->expandIPv6($ip); |
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} |
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} else { |
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if ($cidr !== null) { |
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if ($cidr > static::IPV4_ADDRESS_LENGTH || $cidr < 0) { |
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return [$this->wrongCidr, []]; |
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} |
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} else { |
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$isCidrDefault = true; |
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$cidr = static::IPV4_ADDRESS_LENGTH; |
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} |
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if (!$this->validateIPv4($ip)) { |
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return [$this->message, []]; |
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} |
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if (!$this->ipv4) { |
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return [$this->ipv4NotAllowed, []]; |
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} |
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} |
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if (!$this->isAllowed($ip, $cidr)) { |
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return [$this->notInRange, []]; |
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} |
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$result = $negation . $ip; |
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if ($this->subnet !== false && (!$isCidrDefault || $isCidrDefault && $this->normalize)) { |
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$result .= "/$cidr"; |
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} |
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return $result; |
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} |
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/** |
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* Expands an IPv6 address to it's full notation. For example `2001:db8::1` will be |
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* expanded to `2001:0db8:0000:0000:0000:0000:0000:0001` |
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* |
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* @param string $ip the original IPv6 |
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* @return string the expanded IPv6 |
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*/ |
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private function expandIPv6($ip) |
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{ |
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$hex = unpack('H*hex', inet_pton($ip)); |
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return substr(preg_replace('/([a-f0-9]{4})/i', '$1:', $hex['hex']), 0, -1); |
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} |
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/** |
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* The method checks whether the IP address with specified CIDR is allowed according to the [[ranges]] list. |
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* |
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* @param string $ip |
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* @param int $cidr |
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* @return bool |
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* @see ranges |
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*/ |
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private function isAllowed($ip, $cidr) |
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{ |
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if (empty($this->ranges)) { |
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return true; |
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} |
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foreach ($this->ranges as $string) { |
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list($isNegated, $range) = $this->parseNegatedRange($string); |
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if ($this->inRange($ip, $cidr, $range)) { |
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return !$isNegated; |
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} |
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} |
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return false; |
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} |
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/** |
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* Parses IP address/range for the negation with [[NEGATION_CHAR]]. |
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* |
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* @param $string |
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* @return array `[0 => bool, 1 => string]` |
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* - boolean: whether the string is negated |
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* - string: the string without negation (when the negation were present) |
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*/ |
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private function parseNegatedRange($string) |
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{ |
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$isNegated = strpos($string, static::NEGATION_CHAR) === 0; |
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return [$isNegated, $isNegated ? substr($string, strlen(static::NEGATION_CHAR)) : $string]; |
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} |
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|
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/** |
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* Prepares array to fill in [[ranges]]: |
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* - Recursively substitutes aliases, described in [[networks]] with their values |
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* - Removes duplicates |
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* |
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* |
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* @param $ranges |
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* @return array |
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* @see networks |
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*/ |
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private function prepareRanges($ranges) |
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{ |
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$result = []; |
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foreach ($ranges as $string) { |
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list($isRangeNegated, $range) = $this->parseNegatedRange($string); |
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if (isset($this->networks[$range])) { |
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$replacements = $this->prepareRanges($this->networks[$range]); |
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foreach ($replacements as &$replacement) { |
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list($isReplacementNegated, $replacement) = $this->parseNegatedRange($replacement); |
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$result[] = ($isRangeNegated && !$isReplacementNegated ? static::NEGATION_CHAR : '') . $replacement; |
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} |
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} else { |
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$result[] = $string; |
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} |
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} |
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return array_unique($result); |
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} |
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/** |
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* Validates IPv4 address |
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* |
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* @param string $value |
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* @return bool |
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*/ |
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protected function validateIPv4($value) |
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{ |
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return preg_match($this->ipv4Pattern, $value) !== 0; |
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} |
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|
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/** |
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* Validates IPv6 address |
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* |
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* @param string $value |
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* @return bool |
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*/ |
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protected function validateIPv6($value) |
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{ |
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return preg_match($this->ipv6Pattern, $value) !== 0; |
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} |
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|
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/** |
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* Gets the IP version |
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* |
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* @param string $ip |
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* @return int |
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*/ |
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private function getIpVersion($ip) |
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{ |
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return strpos($ip, ':') === false ? 4 : 6; |
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} |
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/** |
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* Used to get the Regexp pattern for initial IP address parsing |
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* @return string |
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*/ |
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private function getIpParsePattern() |
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{ |
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return '/^(' . preg_quote(static::NEGATION_CHAR) . '?)(.+?)(\/(\d+))?$/'; |
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} |
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|
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/** |
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* Checks whether the IP is in subnet range |
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* |
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* @param string $ip an IPv4 or IPv6 address |
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* @param int $cidr |
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* @param string $range subnet in CIDR format e.g. `10.0.0.0/8` or `2001:af::/64` |
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* @return bool |
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*/ |
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private function inRange($ip, $cidr, $range) |
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{ |
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$ipVersion = $this->getIpVersion($ip); |
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$binIp = $this->ip2bin($ip); |
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|
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$parts = explode('/', $range); |
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$net = array_shift($parts); |
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$range_cidr = array_shift($parts); |
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|
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|
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$netVersion = $this->getIpVersion($net); |
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if ($ipVersion !== $netVersion) { |
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return false; |
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} |
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if ($range_cidr === null) { |
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$range_cidr = $netVersion === 4 ? static::IPV4_ADDRESS_LENGTH : static::IPV6_ADDRESS_LENGTH; |
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} |
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|
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$binNet = $this->ip2bin($net); |
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return substr($binIp, 0, $range_cidr) === substr($binNet, 0, $range_cidr) && $cidr >= $range_cidr; |
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} |
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|
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/** |
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* Converts IP address to bits representation |
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* |
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* @param string $ip |
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* @return string bits as a string |
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*/ |
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private function ip2bin($ip) |
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{ |
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if ($this->getIpVersion($ip) === 4) { |
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return str_pad(base_convert(ip2long($ip), 10, 2), static::IPV4_ADDRESS_LENGTH, '0', STR_PAD_LEFT); |
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} else { |
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$unpack = unpack('A16', inet_pton($ip)); |
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$binStr = array_shift($unpack); |
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$bytes = static::IPV6_ADDRESS_LENGTH / 8; // 128 bit / 8 = 16 bytes |
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$result = ''; |
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while ($bytes-- > 0) { |
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$result = sprintf('%08b', isset($binStr[$bytes]) ? ord($binStr[$bytes]) : '0') . $result; |
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} |
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return $result; |
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} |
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} |
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|
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/** |
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* @inheritdoc |
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*/ |
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public function clientValidateAttribute($model, $attribute, $view) |
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{ |
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ValidationAsset::register($view); |
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$options = $this->getClientOptions($model, $attribute); |
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|
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return 'yii.validation.ip(value, messages, ' . Json::htmlEncode($options) . ');'; |
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} |
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|
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/** |
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* @inheritdoc |
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*/ |
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public function getClientOptions($model, $attribute) |
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{ |
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$messages = [ |
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'ipv6NotAllowed' => $this->ipv6NotAllowed, |
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'ipv4NotAllowed' => $this->ipv4NotAllowed, |
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'message' => $this->message, |
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'noSubnet' => $this->noSubnet, |
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'hasSubnet' => $this->hasSubnet, |
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]; |
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foreach ($messages as &$message) { |
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$message = Yii::$app->getI18n()->format($message, [ |
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'attribute' => $model->getAttributeLabel($attribute), |
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], Yii::$app->language); |
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} |
|
|
|
$options = [ |
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'ipv4Pattern' => new JsExpression(Html::escapeJsRegularExpression($this->ipv4Pattern)), |
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'ipv6Pattern' => new JsExpression(Html::escapeJsRegularExpression($this->ipv6Pattern)), |
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'messages' => $messages, |
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'ipv4' => (bool) $this->ipv4, |
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'ipv6' => (bool) $this->ipv6, |
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'ipParsePattern' => new JsExpression(Html::escapeJsRegularExpression($this->getIpParsePattern())), |
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'negation' => $this->negation, |
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'subnet' => $this->subnet, |
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]; |
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if ($this->skipOnEmpty) { |
|
$options['skipOnEmpty'] = 1; |
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} |
|
|
|
return $options; |
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} |
|
}
|
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|